Pushing DS (3yrs) round the supermarket in the trolley and we're chatting away, like we do when DS says "Mummy, we don't say for God's sake, it's naughty" and I say "yes that's right. It's naughty" then he says "and we don't say bloody hell either" and I said "right again!" then he goes "and we really never say fuck"
Had to turn away and bite the insides of my cheeks to stop myself from roaring with laughter. I don't think that I should find this type of thing funny